Needle mounting structure for solving poor LCD needle mounting rainbow

Abstract

The utility model discloses a pin mounting structure for solving poor LCD pin mounting rainbow, which comprises a metal PIN, an LCD comprises lower glass, upper glass and a glass crack positioned between the lower glass and the upper glass, a distance is reserved between the upper end of the lower glass and the side surface of the upper glass, the distance is a glass step, the metal PIN is meshed with the glass step through a bayonet at the top of the metal PIN, and the metal PIN is arranged in the glass crack. The upper end of the bayonet and the glass step are packaged through UV glue, after the glass step is lengthened and extended and packaged through the UV glue, a distance is kept between the formed UV glue and the upper glass, and the bayonet is narrowed. According to the utility model, the step size of the LCD glass is increased, the length of the PIN bayonet is reduced, and the space is saved, so that the UV glue can not flow into the crack of the LCD glass and can not be adhered to the side surface of the LCD glass, thereby completely solving the problem of poor rainbow in pin installation, and the original PCB can still be universally used even if the size of the glass step is widened through the PIN bending technology.

Description

Technical Field

[0001] This utility model relates to the field of LCD pin mounting technology, specifically a pin mounting structure for solving the problem of rainbow defects in LCD pin mounting. Background Technology

[0002] Currently, there are three main methods for connecting LCD screens and PCBs: metal pins, FPC, and conductive adhesive strips (ZEBRA). A smaller amount uses heat seal. Metal pin connections are widely used due to their reliability, stability, low cost, and ease of mass production. However, metal pins require UV adhesive to fix them to the LCD glass steps. UV adhesive shrinks at low temperatures, causing pin mounting rainbow defects. Solving this pin mounting rainbow problem has become a technological challenge faced by every LCD factory.

[0003] like Figure 1 The diagram shows the pin mounting structure of an LCD display. After the metal pins are attached to the glass steps of the LCD screen, UV adhesive needs to be applied to the pin surface for fixation. The UV adhesive is fluid and will seep into the glass gaps (the LCD screen is composed of two glass substrates, upper and lower) (see below). Figure 1 It will also stick to the side of the glass (see below). Figure 1 Under low-temperature operating conditions, UV adhesive undergoes physical shrinkage, which can stretch and deform the glass, resulting in uneven thickness of the LCD cell and the appearance of Newton's rings, a defect known in the LCD industry as "pinning rainbow." Currently, most LCD factories add a step before applying the UV adhesive: "applying silicone to the LCD gaps." This prevents the UV adhesive from penetrating into the gaps and thus avoids the pinning rainbow defect. While filling the LCD gaps with silicone can mitigate the low-temperature pinning rainbow to some extent, this method adds an extra step, and the UV adhesive can still adhere to the sides of the LCD glass (see below). Figure 1 Even at low temperatures, there will still be varying degrees of poor needle loading rainbow effect.

[0004] Therefore, in order to correct the above defects, we propose a pin mounting structure to solve the problem of rainbow defects in LCD pin mounting. Utility Model Content

[0005] The technical problem solved by this utility model is to propose a pin assembly structure that solves the problem of rainbow defects in LCD pin assembly, which completely solves the problem of rainbow defects without the need to add silicone sealant.

[0006] 4. To achieve the above objectives, this utility model provides the following technical solution: a pin mounting structure for solving the problem of rainbow defects in LCD pin mounting, comprising a metal pin, wherein the LCD comprises a lower glass, an upper glass, and a glass gap between the lower glass and the upper glass, wherein the upper end of the lower glass has a gap with the side of the upper glass, the gap being a glass step, wherein the metal pin engages with the glass step through a latch at its top, wherein the upper end of the latch is sealed with the glass step by UV glue, wherein the glass step is extended, and after the UV glue is sealed, the formed UV glue maintains a gap with the upper glass, and the latch is widened.

[0007] Furthermore, the length of the glass step is 3mm.

[0008] Furthermore, the width of the bayonet is 1.4mm.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1) Increasing the size of the LCD glass step and reducing the length of the PIN slot, the space saved is sufficient to prevent UV glue from flowing into the gap of the LCD glass or sticking to the side of the LCD glass, thus completely solving the problem of rainbow defects in the pin assembly; 2) By using the PIN bending technology, even if the size of the glass step is widened, the original PCB can still be used. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of an LCD pin mounting structure in the prior art;

[0011] Figure 2 This is a schematic diagram of the LCD mounting pin structure in this utility model. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] This utility model provides a technical solution:

[0014] Please see Figure 2A pin mounting structure for solving the problem of rainbow defects in LCD pin mounting includes a metal pin 5. The LCD includes a lower glass 1, an upper glass 2, and a glass gap 3 between the lower glass 1 and the upper glass 2. The upper end of the lower glass 1 and the side of the upper glass 2 have a gap, which is a glass step 6. The metal pin 5 engages with the glass step 6 through a latch 7 at its top. The upper end of the latch 7 and the glass step 6 are sealed with UV glue 4. The glass step 6 is extended. After the UV glue 4 is sealed, the formed UV glue 4 maintains a gap with the upper glass 2. The latch 7 is widened.

[0015] Specifically:

[0016] 1. Widen the glass step dimensions

[0017] In the LCD industry, products using metal pin connections typically have an LCD glass step width of 2.0m (see below). Figure 1 This improvement plan changes the width of the glass step from 6mm to 3mm (see below). Figure 2 )

[0018] Second, while ensuring a secure connection, reduce the width of the metal PIN slot.

[0019] In the LCD industry, the width of the metal pin header is typically designed to be 1.7mm (see below). Figure 1 This improvement plan uses a custom-designed 7-pin metal connector with a width of 1.4mm (see below). Figure 2 )

[0020] III. Before the improvement, the glass step width was 2.0mm, and the PIN slot width was 1.7mm. The metal PIN needed to be completely covered with UV adhesive to ensure reliable connection. However, UV adhesive is fluid, so the original adhesive would seep into the LCD glass gaps and stick to the sides of the LCD glass (see below). Figure 1 At low temperatures, the UV adhesive shrinks, causing deformation of the display glass substrate and resulting in "pin mounting rainbow defects."

[0021] IV. After the improvements, the glass step is widened to 3.0mm, and the PIN slot width is reduced to 1.4mm. Due to the sufficient space, the UV adhesive will not seep into the gaps in the LCD glass, nor will it adhere to the sides of the LCD glass (see below). Figure 2 This completely solves the problem of pin loading rainbow caused by UV adhesive shrinkage at low temperatures.

[0022] 5. After widening the glass step by 1mm, the metal pins will not be able to be inserted into the original PCB board connection holes. This solution uses a bent pin technique (see below). Figure 2 This allows the resized display screen to still use the original PCB without requiring changes to the original PCB design, thus saving costs.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pin mounting structure for solving the problem of rainbow defects in LCD pin mounting, comprising a metal pin (5), wherein the LCD comprises a lower glass (1), an upper glass (2), and a glass gap (3) between the lower glass (1) and the upper glass (2), wherein the upper end of the lower glass (1) has a gap with the side of the upper glass (2), the gap being a glass step (6), the metal pin (5) engaging with the glass step (6) through a snap-fit ​​(7) at its top, the upper end of the snap-fit ​​(7) being sealed with UV glue (4), characterized in that: The glass step (6) is extended and encapsulated with UV glue (4). The formed UV glue (4) maintains a distance from the upper glass (2), and the snap-fit ​​(7) is widened.

2. The needle mounting structure for solving the rainbow problem of LCD according to claim 1, wherein, The length of the glass step (6) is 3mm.

3. The needle mounting structure for solving the rainbow problem of LCD according to claim 1, wherein, The width of the bayonet (7) is 1.4 mm.

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